ANZ Stadium - Friday March 30th, 5:10 am

Sharks

Storm

Southern Cross Group Stadium - Friday March 30th, 9:05 am

In the US, concussion has become a heated issue in recent years, with NFL players reaching a billion-dollar settlement in a class action against the league.

Closer to home, one of rugby league's original four Immortals, Graeme Langlands, died last month after being diagnosed with dementia while his former St George teammate John Raper is in a nursing home with the same disease.